Screening device



w MATTHES. SGREENINVG DEVICE. APPLICATION FILED I UNE 3, vI9l9.

Patented Sept. 2, 1919.

5 SHEETS-SHEET l.

w. MATTHES. SCREENING DEVICE. APPLICATION FII-.ED .IU NE3| 9I9.

Patented sept. 2, 1919.

5 SHEETS-SHEET 2 l Witnesses f @m Tm vnuwmn l'LANnnuAPll cn.. wAsIlxNuToN. D. C.

W. MATTHES.

SCREENING DEVICE.

APPLICATION FILEDJUNE 3. |919.

1 ,3 14,826. Patented Sept.. 2,1919l 5 SHEETS-SHEET 3.

Witnesses: Inventor @DM/ William Mannes, E

l W. MATTHES.

SCREENING DEVICE.

APPLICATION man JUNE a. |919,

1,3 14,826. Patented Sept. 2,1919.

5 SHEETS-SHEET 4.

fnven'or I/l/z'/zes es: may william Maz-mes,

is Aitor/gy W. MATTHES.

SCREENING DEVICE.

' APPLICATION FILED JUNE 3. I9I9.

Patented Sept. 2, 1919.

5 SHEETS-SHEET 5.

n.7nfranaf4ln541551151155455555 54 Y 47 45 Witnesses: l Jvzvefzzof' v WLZZ zam Matt/zes, Wm f zlwr/zy E TED STATES PATENT OFFICE.

SCREENING DEVICE.

Specification of Letters Patent.

Patented sept. 2, 1919.

Application led June 3, 1919. Serial No. 301,497.

To all whom t may concern.' y

.t Be it known that I, WILLIAM MATTHns, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Screening Devices, of which the following is a specification.

One object of my invention is to provide a device which can be easily operated for the purpose of screening material, such for example as for screening or sifting ashes. l Another object is `to make my invention of such construction that it can be easily and quickly manipulated to discharge the sifted material and the residue remaining after the sifting action has taken place.

A `further object is to make my invention of `a strong and durable construction and so that when it is in operation, the material` will be retained within a closed space so as to preventthe iying of dust.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which:

Figure 1 is a side elevation of my improved device showing in full lines, the normal position of certain of the elements and in dot-anddash lines, two tilted positions of said elements, y

Fig. 2 is an end elevation of the device shown in Fig. 1,

Fig. 3 is an elevation of the op osite end of the device from that shown 1n Fig. 2 and'illustrating the lid in an open positlon,

Fig. 4 is a topv plan view of the device with the lid open, 4

Fig. 5 is a central longitudinal section of my improved device showing certain parts of the supporting structure broken away.

Fig. 6 is a front elevation of a rotatable screening cage vwhich forms a part of my invention, A

Fig.v 7 is a fragmentary sectional eleva- -tion showing certain of the elements in an openk p0sition,ready to discharge the residue from ythe screening cage, I

, Fig. 8` is a fragmentary section taken on thedineS-S of Fig. 1, i

y Fig. 9 is a fragmentary `section through the screening cage locking means and taken `on the line 9-9 of Fig. 2, and p Fig. 10 is a fragmentary plan `view pard tially lnsection showing ,a modified form of means for locking the main housing to the supporting structure.`

Referring to the drawings and considering that the device is to be used for sifting or screening ashes, 12 represents a hollow housing which is open at its top and is provided with a lid 13 which is pivoted at 14. The housing 12 has a depression 15 at its bottom which provides a lwell which has an opening 16 at one end which is normally` closed by a slidable door 17.

The housing 12 is pivotally connected at each side, as shown at 18 to a supporting structure which includes two standards 19 and 20, said standards being substantially of an inverted V-shape,'as clearly shown in Fig. l. Two guides 21 and 22 are secured to the housing 12 and are positioned at opposite sides of the housing, said guides having slots 23 therein through which the standards 19 and 20 extend. The guides 21 and 22 are arcuate in elevation, the portions ad jacent the opposite ends of the housing` being of less radius than the intermediate portion, as clearly shown in'Fig. 1.

A spring detent in the form of a strip 24 is riveted at 25 to one leg of one of the standards, said detent having a projecting boss 26 adapted to straddle the guide 21 when the housing is in its normal position, as clearly shown in Figs. 1, 2 and 8. The detent 24 is provided with a handle 27 by which the detent can be pushed inwardly to free the. guide 21 and thereby permit the housing to be swung into either of the dot` and-dash line positions illustrated in Fig. 1.

A screening cage 28 has a shaft 29 secured thereto, said shaft having bearin s in the.

bottoms of two slots 30 and 31 ormed in opposite ends of the housing 12, said slots extending downwardly from the top edge of said housing and normally being closed by slidable gates 32, said gates serving to pre'- vent the shaft from moving upwardly in the slots 30 and 31 during the rotation of the screening cage. The shaft 29 has a crank portion 33 provided witha handle 34. The screening cage has a section 35 which is hinged tothe body portion 36, and slotted lips 37 are adapted to engage over keepers 38 on the body portion 36. Latches 39 are pivoted to the body portion 36 of the cage 28 and can be swung so as to embrace the keepers and thereby lock the section 35to the section36. The end of the body portion 28 of the screening cagehas an opening 40 Vwhich is normally closed by a door 41 which is hinged at 42 to the body portion 3'6, said 1 door having a link 43 which is pivoted to a lever 44; the lever being positioned gwithin' the screening cage and being pivoted bracket 45.l The lever 44 has a free end eX-A tending in the direction of the pivoted section 35 of the screening-cage so that by opening said ,section` 35 it is possible, by mov-V ing the lever 44, to open ythe doo-rv41.` The endof thehousingadjacent the door'41 has an opening 46 adaptedto register with the opening 40'in thescreening cage'28. #Furthermore, the door'41,` when in its open p'osition, exten/ds -through the opening 46, as clearly shown in- Fig. 7 Ac door 47 is hinged at its bottom to the housing and nor- 'r mally 'forms afclosure for the opening46.'

This door 47 has an angular .portionl 48 which abuts the endof the housing and re-V y tains the door 47 at an `anglefto said end c of the housing and as is alsoshown in Fig. 7.

The door 47 is providedV with side flanges 49 so that Athe door 47 forms a chuteV when thel housing is tilted, andthe residue material will-pass out of the opening 40, through the opening 46, Vand down the chute 49, thereby permitting the discharge of the residue material from* the cage. The screened material `drops into` the well 15 andV this Y Y screenedmaterial can be discharged lby open,-

closed, thelever44 will be positioned against Y ing thel door 17 and tilting thev housing in the opposite direction. f Y

Y. The screeningcage 28 has a strip 50 secured thereto, said strip" havingan inwardly beveled surface v51 against `which the lever V44pres`sesV when the latter lever is` moved to close` thefdoor 41. Whenthe door 41 .isv

the NAshoulder' 52 and thereby prevents the dccr`41from accidentally opening while the screeningcage Vis beingV rotated. In order to free the lever! 44 from the shoulderf52,

- it is necessary to slightly loend said leverin the direction of' its thicknessy to cause lthe* lever to"move awayffromthe shoulder 52 'and then slide over the edge surface 51. 'It will be further noted that when the door 1,127,14and"v 'lheupper end 'of the rod :53 -isl connected to afplate spring 56, vsaid spring being 1 60 Y "securedjtothe housing 12 and aV lever 58 lwhich is provided with a'handle 59'isy pivattached the` off the housing'12.

A 100psr'co'nsisung 0f 'a 1 mania ysnip otedto v'theliousing 12 and' extends across ttheiou'ter surface of the plate spring :56 andV the loop 57. Theiplate spring 56 is angularly disposed andlr,normallyV holdsV thel locking shoe 54 out ofengagement with the lug 55 on the screening rcage 28. When tesathe lever 578 is moved upwardly it pushes against the spring 56 and causes therod 53 and locking shoe 54 to be movedl inwardly, until said locking shoe embraces the lug 55, thereby locking the screeningV cage VagainstV rotation. n Y Considering that to beused forv sifting ashes fromlpartly I burnt coal, theflid 13Yis openedas is Aalso Vthe 1 'i sectionl 35l ofthe screening cage. i The mixed kssoscreening cage'and the section 35' islo'cked ashes and coal is then inserted within the and the lid 13 is closed. The lever "58 is y then lowered, the spring 56 withdraws the locking shoe 54 from the lug 55, The screen- Y n handle 34'and the ashes droplintothe well,`

ing cage is then rotated fbymeans of the 15. The housing is-then tiltedY by pressing the'knob 27 inwardly and swinging the hous-y ing so that the door 17 moves downwardly-ff l The door 17 is then Vopened and the ashes" will slide'out'into any4 suitable receptacle@ j Y They door 17 canthen be .closed and thev housing can be swung in theopposite direc` i tion, afterwhich the lid 13 and section 35 of theV screening cage can be Yopened so as to actuate Y the lever' 44V to open Y the .doorV 41, Y Y and the door 47 canbe dropped to permit the door 41 Vto extend through the opening in' the manner illustratedin ,Fig. 7. The .Y

unburnt coal kwillfthen slide through the openings 40 a11d146.` and the door'47VV will serve as achute for-directingthe coal` into I a suitable receptacle."

The door 41 can`V be closed by moving thef* lever 44l on its pivot and the strip50 ,willVY cause said lever to be slightly bent until thefV lever has passed entirely over the'strip when 'said lever will spring back ofthe shoulder 52 kland thereby lock the Vdoor 41Y in a 'closed position. The door 47 canthenbe closed and this door is held in its closed position by 'a'spring keeper 59 which is Vmountedon the housing 12.

' In Fig. 10, I have Y means for Vlocking thefhousing to thevr supporting structure.

The sameconsists of'a shown anotheriorin of ynahe@ which is pivoted at 61 tothe guide:

22,v said4v latchfbeing movable 'between Vthe .p i i strip .6,2 and theguide 2 2,cand Vservin'ggto abut Ythestandard 20.l Thelatch-BO extends across; the slot. 23 and: thereby;v` prevents Y "swinginggmovement in one'directionbetween Y the housing and therv V`sup'] eortingV structure.

A Similar device 'Canxbe inserted oIfl thj0pj` 125 ment of the housingjcin 'anVOPPQS-tgdie- Y posite side so as tozprevent swinging movetion. f

takingV a particular or'mfit will A be ,under-V StOOd that 'the VerQuS parts of Vmy. invern#l tion may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A device of the character described including a hollow housing; a screening cage rotatably mounted within said housing; supporting means; means pivotally supporting said housing `between its ends whereby vthe housing can be tilted in opposite directions7 -said housing including a well positioned below said screening cage and having an opening at one end; a door for closing said opening, said housing having a second opening; a door for closing said second opening; and a door on said screening cage adjacent said latter opening in the housing, whereby material from said screening cage will fall out of said cage and housing when the latter is tilted in one direction and out of said first opening when the housing is tilted in the opposite direction; substantially as described.

2. A device of the character described including a hollow housing; a screening cage rotatably mounted within said housing; supporting means; means pivotally supporting said housing between its ends whereby the housing can be tilted in opposite directions, said housing including a well positioned below said screening cage and having an opening at one end; a door for closing said opening, said housing having a second opening; -a door for closing said second opening; a door on said screening cage adjacent said latter opening in the housing, whereby material from said screening cage will fall out of said cage and housing when the latter is tilted in one direction and out of said first opening when the housing is tilted in the opposite direction, said door being hinged to said cage; a link pivotally connected to said door; and a lever connected to said link and to said cage and operative to open said door in registry with said latter opening in the housing; substantially as described.

3. A device of the character described including a hollow housing; a screening cage movably mounted within said housing; means forming a movable support for sald housing, said housing including a well positioned below said screening cage and having an opening; a door for closing said opening, said housing having a second openlng; a door for closing said second opening; and a door on said screening cage, whereby material from said screening cage can pass out of said cage and housing independently of the material falling into said well, said door in the screening cage being movable into the second mentioned opening in the housing; substantially as described.

4. A device of the character described including' a supporting structure; a housing movably mounted on said supporting structure, said housing having an opening and a door for closing said opening; a screening cage movably mounted within said housing and having a door; a pivoted lever connected to said door operative to open and close said door; a strip secured to said screening cage and having a beveled surface; and a shoulder, said lever being movable into engagement with said beveled surface so as to slightly bend the lever and permit it to spring back of said shoulder and thereby lock the door of the screening cage; substantially as described.

5. A device of the character described including a housing; a rotatable member mounted within said housing and having -a lug thereon; a plate spring; a rod slidable through said housing and having a shoe for embracing said lug on the rotatable member, said spring normally tending to withdraw said shoe Jfrom the lug; and a lever adapted to move said spring and thereby move said shoe into engagement with said lug to lock the rotatable member against movement; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM MATTI-IES.

Witnesses:

ANNA RENTON, CHAs. E. Po'r'rs.

vCopies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

